HIGHLY SENSITIVE FLUORESCENCE THERMOMETER USING LONG AFTERGLOW PHOSPHOR

T. Katsumata, H. Kubo, S. Mochida, H. Aizawa, S. Komuro, T. Morikawa

Abstract

Long afterglow phosphorescent SrAl₂O₄ and CaAl₂O₄ based phosphors are found to be a useful sensor head material in the fluorescence thermometer because of extremely long fluorescence lifetime. Highly sensitive temperature sensor can be developed based on temperature dependence of afterglow intensity of long afterglow phosphor. Sensitivity of long afterglow phosphorescent SrAl₂O₄:Eu, Ln and CaAl₂O₄:Eu, Ln based phosphors are considered to be dominated by depth of the hole traps generated by doped rare-earth elements.

Keywords

fiber-optic fluorescence thermometer, sensor material, long afterglow phosphor

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PWC-2006-TC12-013u.pdf

DOI

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IMEKO TC

TC12 - Temperature and Thermal Measurements

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